TPS7A8901RTJT

The TPS7A89 is a dual, low-noise (3.8 μVRMS), low-dropout (LDO) voltage regulator capable of sourcing 2 A per channel with only 400 mV of maximum dropout. The TPS7A89 provides the flexibility of two independent LDOs and approximately 60% smaller solution size than two single-channel LDOs. Each output is adjustable with external resistors from 0.8 V to 5.2 V. The wide input-voltage range of the TPS7A89 supports operation as low as 1.4 V and up to 6.5 V. With 1% output voltage accuracy (over line, load, and temperature) and soft-start capabilities to reduce inrush current, the TPS7A89 is ideal for powering sensitive analog low-voltage devices [such as voltage-controlled oscillators (VCOs), analog-to-digital converters (ADCs), digital-to-analog converters (DACs), high-end processors, and field-programmable gate arrays (FPGAs)]. The TPS7A89 is designed to power noise-sensitive components such as those found in high-speed communication, video, medical, or test and measurement applications. The very low 3.8 μV RMS output noise and wideband PSRR (40 dB at 1 MHz) minimizes phase noise and clock jitter. These features maximize the performance of clocking devices, ADCs, and DACs.

Applications

• High-Speed Analog Circuits: VCOs, ADCs, DACs, LVDSs
• Imaging: CMOS Sensors, Video ASICs
• Test and Measurement Instrumentation, Medical, and Audio Digital Loads
• Auxiliary Rails: SerDes, FPGAs, DSPs

Key features

• Two Independent LDO Channels
• 4-mm×4-mm, 20-Pin WQFN Package
• Low Output Noise: 3.8 μVRMS (10 Hz to 100 kHz)
• Low Dropout: 180 mV (typ) at 2 A
• Wide Input Voltage Range: 1.4 V to 6.5 V
• Wide Output Voltage Range: 0.8 V to 5.2 V
• High Power-Supply Rejection Ratio (PSRR): 75 dB at DC, 40 dB at 100 kHz, 40 dB at 1 MHz
• 1.0% Accuracy Over Line, Load, and Temperature
• Excellent Load Transient Response
• Adjustable Start-Up In-Rush Control
• Selectable Soft-Start Charging Current
• Independent Open-Drain Power-Good (PGx) Outputs
• Stable with a 10 μF or Larger Ceramic Output Capacitor